Vibrato device for talking-machines



M. OGORMAN.

VIBRATO DEViCE FOR TALKING MACHINES.

APPLICATION FILED JAN 4. 19H. BENEWED JAN.29.1920.

1,333,726. Patented Mar. 16, 1920. Y

2 SHEETS-SHEET I.

MJOGORMAN.

VIBRATO DEVICE FOR TALKING MACHINES. APPLICATION FILED IAN. 4, 1917. RENEWED JAN-29,1920.

HEET '2.

Patented Mar.

. 2 S H E ETSS 1 To a ll'znhom iz f may mm. 7 Be it known that I, MERVYN OGORMAN,

UNITED'ISTATES EN O E? l p LMERV o eomvilimorcnnnsna,Lennon, ENG/LAND,

a vinaaronnvrcn For. TA KIn'G-MAc IN s.

Application filcdl'anuary' 4,1517, Serial Ho. 140,621. *Renewed January 29, 1920M Serial No. 354,832.

a subject ofthe King of Great Britain and "Ireland, and residing at Chelsea, London,

\S, W., England,- have; 'inventedl'a certain new anduseful Vibrato Device for Talking- Machines,-of which the following is a specification. z

The present invention relates to F ram'ophones, ta-lking machines, phonograp s and the likefand has for its object the introduc- I viding means for 'efi'e'cting' at will 1 a V change in the relative positions ofthe re-- 1 advancing and retarding of the relative I position of the reproducing point and the 7 ,sound groove) while the reproduction is actually taking place, The" introduction of such. a fluctuatingrelative motion may be efl'ected-in'any manner; and various results j s accrue according to the speed and character-I tion of a tremoloeither when-making-the' vr ecord in' the-firstinstance'andthepr vision of means whereby'the' operator can during theactual course of reproduction of' music,'speech and other sounds, accentuate,

-1nodulate or give feeling or expression to the sound, at'his own free will,1thu's render ing the reproduction lessmechanicalgand monotonous; a l "'1 4: In talking machines and the like, whether or not a tremolo has been introduced, in the v original fOrmatiohbtthel record, when a record is sounded over and again in the oring precisely similar to the last the result is much more monotonous than'when the same piece ofmusic, &c.,1is repeated by the hu-" man performers, partly owing to" the :va

dinary manner, owing to each repetition beriations made consciously or unconsciously by the performers.

The present sin vention consists in proproducing point and the sound groove, (for example a slight oscillation such as a rapid V of the fluctuations.

' forthl along the generalydirectlon of the Thus, a movement ofxthe pointback and soundgroove at the rate of; fromaboutfour tojtwenty per second produces a tremolo effect by reason of the perceptible variations of pitch, and; these :variations alt'er V the timbre of thenotes" andlmoreovercause these notes a which are sustained to at-,

" tract "the 'listeners' attention and therefore to appear more accentuated. Genera ally speaking,the higher' the notes and the quicker they are played, themore rapid the amplitude of motion of g, inch back and 1 forth w'ill'suflice, but it may be exaggerated or diminished to produce special effects. 1 Notably inspoken las distinct from intoned speech the amplitude maybe much larger.

For piano, unless a freakresult is intended, 1t must be'very smelly-much smaller than r i ef r a' a Paa aaim.16,1920;-

with violin or cornet. g Ina'general-way aneflect analogous, to y 1 the-i organ stop known as, V02; 1 humana V j may bG'ilIItIOdUCGCl atwill-. At higher vspeeds ,o lt' fluctuation the tremolo effect is less r'ioticeable but the alteration ofltimbre remainsaup toia high speed, and it is found that this 'efi'ect;rresults in masking the a scratching sound: produced" by friction be tween the, stylus and the i'ecord toa very large extent, this being due tothezfactthat I point and the rotating record.

osities to command the point,

The invention further consists in the means for varying the mechanical reproduc- V t1on;1n talking machlnes and the like hereinafter described. a

g illustrate onemethodof carrying into? efi'ect the introduction of'the tremolo at will 7 during reproduction of the sound by the acco 'npanymg drawings.

' Fgure l is a view partly in perspectivev and partly in section showing the invention.-

Fig. '2 shows a modification and Figs. 3 and 4 are details of a part ofFig. 1. v Figsal, 3 and t'represe'nt a talking inachine or gramophone containing in the boX a the usual mechanism to turn the record 5712.1 Theitonearm Id to'which the soundfrom" fthe'sound box cl is conveyed bythe'tubec communicates} in the usual mannerywith'the sleeveat l. Thetubec is'soidisposed' as to ing; the tube 0' of flexible material such as india rubber. The point h can be swayed to and from thedirection of the sound groove either as shownby movingthe sou'nd'box there is less frictional drag between the loo bodily forward to the dotted position orby 'necting the actuating lever through a loose connection we to a vibrating table tlof theordinary kind, such as is vibrated by reason of carrying an out of balance fly wheeln-or by contact with a cam or a vibrating spring, &c.

WVhcn/the loose connection we is tautened'by the operator the vibrations of-thevibrating table'are imparted to, the system of which the sound box forms part and causes. the

tremolo, and when. the connection is; once more loosened the tremolo ceases-or diminishes. i a

In all-cases I introduce a padded stop an,

' Fig, 1, against whichthe arm carrying the pitch. V

sound boXis brought by. aspringis or weight or bythe drag of the moving record so that when the tremolo or vibra-tor isnot muse there may be no unintentional changes of lower the hinge pointon the lever'f, Fig. 1,

vso as to be at the level of the-needle. point and thus avoid changes of pitch when a .recrd happens to be warped or twisted as sometimes occurs;

;to :move the soundbox.

For the same reason I prefer to.

signature.

Fig. 2 illustrates one method'by which with a movable tone arm the additional freedom of movement/for the sound box is provided. Therhingedtube e fits into a socket communicating with the tone arm, and

allows the wire or lever f, Fig. 2, when actuated by the finger or by the vibrating table Having now described my" invention what I claim as new and desire to secure by Lettom Patent is 1. In a talking machine, a record, have ing a sound groove, a sound box having, a

diaphragm, a pointcarried by the sound :box and engaging thegroove of the, record, means. for rotating the record'to make the point traverse the groove and means for giving arelative back and forth movement to the record, and point, additional to the regular traversing movement! of the point,.

substantially-as describeda In talking machines, a record, a sound groove on said record, a soundbox, a point carried by said sound box and engaging with said groove, a diaphragm operated by'said point, and :means for rapidlyoscillating said soundfbon with the point in the directioirof rotation .o'fthe record, as set 'forth.

In testimony whereof, I have affixedimy MERVYN oeoRMAN. 

